Combined ore crusher and pulverizer



(No Model.) ZSheets-Sheet 1. G. P. E. BRINCKMANN.

Combined Ore Crusher and -Pulverizer.

N0. 233,139. Patented OCt. 12,1880.

y 'HiyaA l/ "\W' N \\ltlnl (No Model.) l 2 Sheets-Sheet 2. G. F. E. BRINCKMANN.

Combined Ore Crusher and Pulverizer.

NITED STATES AT1-:Nr OFFICE.

GILLES F. E. BRINGKMANN, OF OAKLAND, CALIFORNIA.

COMBINED ORE CRUSHER AND PULVERIZER.

SPECIFICATION forming part of Letters Patent No. 233,139, dated October 12, 1880.

(No model.)

To all 'whom it may concern:

Be it known that I, GILLES F. E. BRINcK- MANN, of the city of Oakland, county of Alameda, and State of California, have invented an Improved Ore Crusher and Pulverizer; and I hereby declare the following to be a full, clear, and exact description thereof.

My invention relates to certain improvements in ore Crushers and pulverizers; and my improvements consist in placing inside a mortar or circular receptacle a peculiarly-shaped muller surrounded by a series ot steel rollers. The muller is somewhat flattened at its upper end, but the bands encircling it continue in a true circle. At the upper sides of the muller are peculiarly-formed offsets or shoulders, by means of which the ore is directed in behind the muller, so as to be caught by the rollers and crushed. 'lhese shoulders gradually lessen in size toward the lower part ot' the muller, and the bottom of said muller is smooth, the space between rollers and muller gradually decreasing downward until the rollers move ou the face of the muller. At the upper part ot' the muller, therefore, the ore is crushed, and at the lower part it is iincly pulverized by the oscillating motion imparted to the muller and the action ot' the rollers until it is iinally discharged below. Means are provided for equalizing the wear of the rollers, as is more fully described in the accompanying drawings, in which- Figure l is a longitudinal vertical section. Fig.2 is a horizontal section. Fig.3 is a transverse section. Fig. 4 is a longitudinal vertical section.

The mortar A is sclni-cylindical or circular inform, the top being open, as shown. The ends Al are formed of metallic plates bolted to the sides, but removable at will. Suitablyplaced braces connect the sides of the mortars, so as tofurnish requisite strength, beingformed of wrought-iron bolts or straps.

The muller B is made in a peculiar form. While its rims or edges B' are formed in a true circle, the upper portion between these rims or edges is not a full circle, but is drawn in from the sides, as shown, so as to form pockets between the upper rollers and the muller, as hereinafter described. The bands or rims are cast with the muller.

In the mortar, and between it and the muller, are placed steel rollers (l, each being independent of the other, but resting one upon another. These encircle the muller up to the sides of the opening at the top of the mortar, as shown.

The upper side portions of the muller, between the side rims or rings, have shoulders a formed upon them, these shoulders gradually lcssening in size toward the lower part, the whole bottom of the muller, however, being smooth, as shown. The shoulders are not corrugations, but are formed with an incline, as shown, so as to jam the rock on the upward stroke against the rollers, and to allow the rock on the downward stroke to go downward. The top of the muller between the rings is also smooth, and the rims or edges have no shoulders or projections, these being formed between the rims or edges only. The rollers are kept in the true circle by their ends touching on the rims or rings, but at the upper sides they do not touch the muller proper, but only the rims or rings. A space, therefore, is left between the smooth upper portion and shoulders and the rollers, this space gradually decreasing until at the smooth lower portion of the bottom the rollers bear for the whole width of the muller. An arm or lever, D, is put on the top ot' the muller, by means of which it is oscillated by any suitable power.

The ore is ted in at the open top of the mortar and falls onto the smooth rounded top of the muller. As the muller is oscillated the ore slides down and rests on the first shoulder, a. As the muller is pushed back this shoulder pushes the ore against the under side of the upper roller, C, causing the roller partly to revolve and direct the ore downward to the next shoulder and roller.

As the quartz drops down onto the shoulder it is in a sort ot' pocket (represented by E) between the muller and the rollers. The oscillation back and forth causes this quartz to be broken by the rollers, as in a rock-breaker, and as the space between the muller and rollers gradually decreases in depth the ore is more iinely broken as it goes downward by its gravity and the action of the rollers. At these points it is only the center of the rollers which do any crushing, the ends of the rollers rest- IOO ing on the rims or rings B. As the ore gradually gets down, however, to the lower smooth portion of the muller, the rims or rings disappear, the muller at this part being in a true circle, and the rollers bear on the lnuller for the whole width. W hen,therefore, the ore has passed all the shoulders, it has gradually become reduced in size, alld whell it reaches the smooth portion of the muller the rollers pnlverize it to a great tilleness, it being cruslled between the rollers themselves, as well as between the rollers and muller and sides of the mortar.

At the upper opell portioll of the lnortar I form anges or ribs H, behind which are the supplemental rollers (l, which forln the continuation of the circle of rollers. These flanges or ribs are contillued down each side a short distance, alld the llpper crushing-rollers, C, have annular grooves, in which the rib or flange fits, to admit of said rollers revolving without reference to said ribs. The center part of the rib or flange is ext-ended, as sllowll at h, near the central opening, so as lo prevent the two upper long rollers, (l, coming up any higher than said extensions or project-ions Il..

The object ot' the short or supplemental rollers is to give a rolling bearing to the upper side of the lnuller, ill case the ne ore at the lower side of said muller crowds it upward. It' ore should accumulate in the bottom ot' the mortar ullder the rollers and muller, the tendency of the lnuller would be to lift up, ill which case it would bind on the upper ones of the long rollers (j. Iy putting these small supplemental rollers ill and keeping them in place by the ilanges Il the lnuller is prevented from risillg upward. while attlle same time all open space is left at the upper central portioll of the muller, illto which the ore lllay be pnt, which would not be the case were these sllpplemental rollers as long as the crushing-rollers C.

This device is seltadjusting, since as soon as ore ls fed in there is pressure on all sides of the rollers. Without any ore the lnachine is set to run easily, so as to leave rooln for ore among the rollers.

At eacll oscillation of the muller the rollers rotate back and forth, squeezing and crushing the ore.

By means ot' the shoulders forming the pockets the upper rollers are rotated, alld will not ride upon the ore, but crnsll it and force it down.

The pulverized quartz colltillnes to pass on down under the rollers by gravity until it is discharged through the opening c at the bottom.

The operation is the sallle on eacll side of the muller, so the machine works colltilluously, whether moved lnllcll or little, orin one direction or the other.

The rollers lnay be made to wear equally by change of position. One end of the mortar is removed at stated intervals, and one or two o f the bottom rollers drawn out and then dropped in at the top. This is done as often as desired, so that an equal wear is maintained, the other rollers then settling down to take the place of those removed.

This mill lnay be run wet or dry. It feeds from botll sides alld discharges at center. 1t is a very e'ective crushing appliance. The eeaseless rotation ot' the rollers on the ore pressed dowll by the weight of the muller pulverizes the ore very finely.

As many rollers as may be necessary' can be used, according to the size of the muller. The sides of the mortar lnay be shod witll shoes, it' required.

This machine answers the purpose of botll crnsher and pnlverizer in one, taking quartz in pieces as large as those received by an ordinary rock-breaker and discharging it as tine as is necessary. The crushing and pulverizing ill this machine is done entirely by the rollers, the ore beillg crushed either wet or dry. By changing these rollers'once ill twentytbur hours a uniform wear upon the wllole device is lnailltained.

When the rollers` and sides of the muller are worll to a certain point, and the work of the machine is not satisfactory, anew muller of larger size is inserted to take the place ofthe one previously used.

The mortar is made of chilled iron or steel, alld the rollers are also of tempered steel. The muller itself is preferably made of white iroll andthe side plates likewise. The wear and tear will therefore be reduced to a lnilliluum.

The muller itself` may be elliptical in form; but I prefer to make it witll the shoulders, as described.

Having thus described my invention, what 1 clailn as new, and desire to secure by Letters Patent, is

1. The quartz crushing and pulverizillg device consisting of the semi-cylindrical mortar A, carrying the cylindrical rollers (J, and the oscillating or reciprocating muller B, having the rings or rims B and the inclined shoulders a, substantially as and for the purpose herein described.

2. ln combination with an oscillating nluller, B, provided with rims or rings B and shoulders or projections a, the circularly-arranged cylindrical rollers C, the supplemental rollers C', alld the mortar A, with its ilanges H, whereby the ore is crushed and pulverized, and the muller kept in position, substantially as and for the purpose herein described.

In witness whereof I have hereunto set my hand.

GILLES F. E. BRINCKMANN.

Witnesses UHAs. G. YALE, FRANK A. BRooKs.

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